Z60 Suspension

Tiger_993 · July 5, 2015

Just checked my build sheet. I have a 2014 LTZ with the Z60 suspension and Z82 trailering package with 20" wheels. Rode smooth on highway, but bounced a lot on bumps or railroad tracks. Changed shocks to Bilstein 5100s front and rear. Handles much better ( more controlled, less bounce )!

Thanks for sharing your experience. I also have the Z60 and I'm looking to lessen the jounce when riding over pavement imperfections.

When you replaced your Z60 shocks, did you notice if the 5100's changed the stance or ride height at all? Since the Z60 ride height is lower than the Z71 or Z85 packages, I'm trying to determine if putting the Bilsteins on, even when set at the "0" lift setting, will increase the ride height compared to the Z60. I want to keep the stock height on mine.

chuckl1218 · July 5, 2015

Thanks for sharing your experience. I also have the Z60 and I'm looking to lessen the jounce when riding over pavement imperfections.

When you replaced your Z60 shocks, did you notice if the 5100's changed the stance or ride height at all? Since the Z60 ride height is lower than the Z71 or Z85 packages, I'm trying to determine if putting the Bilsteins on, even when set at the "0" lift setting, will increase the ride height compared to the Z60. I want to keep the stock height on mine.

No, it did not change the ride height at all. My truck is still at stock height.

chuckl1218 · July 5, 2015

Two pics...top is before and below is after...

Tiger_993 · July 6, 2015

Two pics...top is before and below is after...

Thanks! Looks great.

hotrodz37 · July 14, 2015

Thanks! Looks great.

Tiger,

For what it's worth I have the z60 suspension package with the 20" wheels which I believe you have as well. This weekend I installed Bilstein 5100's on the rear. It handles large bumps better without as much recourse but it is definitely stiffer and some of the cracks that my truck would float over before are a little jarring now. I might be putting the stock shocks back on. I will ride with the 5100's for a while and get a feel, but initial impression is it was more cushy and rode better with the stock shocks.

WendysOrBust · July 14, 2015

Tiger,

For what it's worth I have the z60 suspension package with the 20" wheels which I believe you have as well. This weekend I installed Bilstein 5100's on the rear. It handles large bumps better without as much recourse but it is definitely stiffer and some of the cracks that my truck would float over before are a little jarring now. I might be putting the stock shocks back on. I will ride with the 5100's for a while and get a feel, but initial impression is it was more cushy and rode better with the stock shocks.

I think you need to install the fronts as well to get a fair opinion on them.

Tiger_993 · July 14, 2015

Tiger,

For what it's worth I have the z60 suspension package with the 20" wheels which I believe you have as well. This weekend I installed Bilstein 5100's on the rear. It handles large bumps better without as much recourse but it is definitely stiffer and some of the cracks that my truck would float over before are a little jarring now. I might be putting the stock shocks back on. I will ride with the 5100's for a while and get a feel, but initial impression is it was more cushy and rode better with the stock shocks.

Well, that doesn't sound very encouraging. I'd be interested to hear your updates after putting a few more miles on them. And please feel free to add 5100's to the front as WendysOrBust suggested for a more complete evaluation

hotrodz37 · July 14, 2015

Well, that doesn't sound very encouraging. I'd be interested to hear your updates after putting a few more miles on them. And please feel free to add 5100's to the front as WendysOrBust suggested for a more complete evaluation

Haha, yeah, the fronts are going to be stiffer as well. I had the fronts on my last truck and they rode quite a bit better than stock. I'm not saying the ride is bad by any means, much more controlled, just not as cushy if you know what I mean.

Eddie 70 · November 7, 2015

Just checking here in this thread and it raises a question for me. I see on my glovebox sticker that I have Z60 and Z82. If I understand correctly, Z60 should have come with 20" wheels. My truck has 18" wheels. Is there a code on the glove box that would show 20" wheels and what would that be? Z82 is just trailer package.

Chris · November 7, 2015

Z60 can come with either. Z82 is just the hotch being installed. I dont know the code for 20's on a silverado. The wheels on a Sierra SLT with a 20" is NZM. That is with the chrome "snowflake" 20's

Eddie 70 · November 7, 2015

http://www.gmfleetorderguide.com/NASApp/domestic/rpocodes.jsp?year=2014&regionID=1&divisionID=1&vehicleID=14682

I think I just found my answer on this page. I googled "Silverado 20" wheel RPO code" and this came up. My code list shows RD4 and that is the wheel that should be on my truck. I may have to talk with the dealer on this one. It was bought as a used truck but I would like those wheels on the truck.

Chris · November 7, 2015

If it was used, you get what you get

Eddie 70 · November 7, 2015

If it was used, you get what you get

I know you are right Chris. I just want to raise a little stink with them for GP. I assume the owner drove the truck in and traded wheels and that is what they put on it because they are brand new wheels. There is zero damage to them but several scratches and dents on the truck. So these wheels were not on the truck when it came it. I wasn't there for the trade but.....

chuckl1218 · November 7, 2015

I know you are right Chris. I just want to raise a little stink with them for GP. I assume the owner drove the truck in and traded wheels and that is what they put on it because they are brand new wheels. There is zero damage to them but several scratches and dents on the truck. So these wheels were not on the truck when it came it. I wasn't there for the trade but.....

My 2014 Silverado LTZ shows... "RD2 - WHEELS, 20" CHROME (REPLACES STD/OPT WHEELS) RUF - WHEEL, 17" STEEL SPARE "

22_AT4 · November 7, 2016

I'm looking at a 2WD Sierra SLE and it has the Z60 sticker. The window sticker doesn't list any options other than the normal SLE. Is it possible the dealer just added the sticker to the stock truck?